From: Erblichs (erblichsEARTHLINK.NET)
Date: Tue Mar 11 2003 - 19:01:05 CST

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Thanks,

        I guess I don't remember seeing a msg that
        that a DBD pkt is dropped due to nbr state
        being less than ExStart.

        Mitchell Erblich
        -----------------------

Acee Lindem wrote:
>
> Mitchell,
>
> This is normal operation. The router coming out of interface wait
> state first will continue to resend the initial database packet every
> retransmit interval seconds. The router in wait state will exit
> wait state when he receives a hello from the other guy (assuming these are
> the only guys on the ethernet and the first has elected himself DR).
>
> Erblichs wrote:
> > Group,
> >
> > I have an issue dealing with the interaction of the wait timer,
> > adjacency formation, and the reception of the DBD packet to
> > move into the ExStart of the nbr state machine. This is
> > in a Ethernet environment.
> >
> > What is occuring is simply stated as the ending of the
> > wait timer on one system, an election of DR/BDR and
> > the sending of a DBD packet out.
> >
> > However, the 2nd system still hadn't ended its wait
> > timer and thus no adj has formed. Due to this, the
> > rec'd DBD is normally dropped.
> >
> > This is going on at a customer site after they have
> > mucked with the OSPF code. I know of a simple fix
> > to patch the problem, but was looking to get a consensus
> > on the frequency of this timing issue being seen.
> >
> > Thanks,
> > Mitchell Erblich
> > Sr. Software Engineer
> >
>
> --
> Acee

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